Buffing machine



April 21, 1953 F. IE. WING, JR

BUFFING MACHINE 8 Sheets-Sheet l Filed April 23, 1948 NNN @E Nw mw WNW@ W00 mw Q m 1% JNVENTOR. Fa/955V WM/; W?.

BY ma/ibm@ April 2l, 1953 F. E. w1NG,JR

BUFFING MACHINE 8 Sheets-Sheet 2 Filed April 23, 1948 Mm m.. f M2M fr.v

F MBIHH April 2l, 1953 F. E. WING, JR

BUFF'ING MACHINE 8 Sheets-Sheet 5 Filed April 25, 1948 um. WW

IN V EN TOR. ,C0/w56? A /ff//A/ .7,9,

ApriH 21, 1953 F. E. WING, 11R

BUFF' ING MACHINE 8 Sheets-Sheet 4 Filed April 25, 1948 INVENTOR. Foe/@fsf t W//vg .7m

April 21, 1953 F. E. WING, JR

BUFFING MACHINE Fiied April 25, 1948 8 Sheets-Sheet 5 g. WQ

IN VEN TOR. fr0/WASI 5 .WM/6; WP.

M WM m w M r r A prii 2l, 1953 F. E. WING, JR

Bul-"FING MACHINE 8 Sheets-Sheet 6 Filed April 23, 1948 INVENTOR. FOP/9557 W/A/ l I I I |b4..lll

ZW/Pm A TTOIQ/V' YG April 2l, 1953 F. E. WING, JR

BUFFING MACHINE 8 Sheets-SheefI 7 Filed April 23, 1948 IN V EN TOR. faQ/@fsf t #WA/6; JA.

April 2l, 1953 F. E. WING, JR 2,635,394

BUF FING MACHINE Filed April 23, 1948 `8 Sheets-Sheet 8 g @if TTL-QED Taf- El INVENTOR. 0,995.97 f. W/A/G; JA.

BYQZLWMMM Patented pr. 2l, 1953 UNITED STATES PATENT OFFICE FFIG MACHINE Forrest Wing, Jr., Tacoma, Wash.

Application April 23, 1948, Serial No. 22,859

(Cl. 51e-iso) 10 Claims.

This invention relates to improvements in buinng machines for polishing' or bufling metallic articles or parts, the same being especially adapted for buing spinners for fishing tackle, auton mobile door handles and such like articles. It is understood that in the language of the trade, polishing and buing are two individual and separate operations of nni'shing. However as the machine is readily adaptable to both opera'- tions, the words polishing and hurling are used interchangeably throughout this specification.

An object of the invention is to provide an improved machine whereby the operation of polishing spinners, automobile door handles, and like parts or articles can be rapidly and eiciently performed.

The invention contemplates a machine of the general type in which an endless conveyor is employed that is adapted to carry articles or parts to be buied in contact with the bufng wheels, and another object of the invention is to provide in a machine of this general type improved conveying means whereby the articles r parts to be polished will be advantageously supported and presented to the bufng wheels.

Another object of the invention is to provide article hangers on the conveyor adapted to be turned and simple, efficient means for automatically turning the hangers to partially turn the articles during travel of the conveyor to present diierent parts of the articles to the polishing Wheels.

Another object of the invention is to provide in a machine `of the character referred to, means of simple construction 'for mounting the bufdng wheels providing for supporting the same dis'- posed at a forward and upward inclination lon'- gitudinally of and in a plane parallel to the path of travel of parts on a straight stretch of the conveyor, and for angular adjustment of the buinng wheels about `an axis parallel to the path of travel laterally toward and from the path of travel of parts on the conveyor.

A further object of the invention is to provide an improved mounting for the polishing wheels that will provide for angular adjustment of the axes of rotation of the buffing wheels in a vertical plane longitudinally of the path of travel 0f a stretch of the conveyor to vary the forward inclination of the polishing wheels to the path of travel of parts on the conveyor, and also for angular adjustment 0f the bumng wheels about an axis parallel to the path of travel and for bodily rectilinear adjustment of the same laterally of the path of travel of the straight stretch of the conveyor to operate on articles or parts of various contours, and whereby the several adjustments of the hurling wheels can be easily and quickly eiected and the machine set for operating on articles or parts of different con'- tours and sizes, and to provide for wear of the polishing wheels.

A still further object of the invention is to provide an improved buing wheel unit of simple. compact construction together with attaching means whereby a plurality of such units may be employed interchangeably at different points along a supporting frame at either 'side thereof and the path of travel of a straight stretch of the article conveyor.

The invention, with other objects, novel ifeatures, and advantages thereof, and the particular construction, combinations and arrangements of parts' comprising the same will be understood nom the following detailed description when considered in connection with the accompanying drawings forming part hereof and illustrating one embodiment of the invention.

the drawings:

Fig. 1 is a front elevation of a buinng machine constructed in accordance with the present invention.

llig. 2 is a top plan view.

Fig 3 is a transverse section on the line 3-3 of Fig. 2. Fig. 4 is a front elevation, with 'parts shown infsection, on an enlarged scale of one of the polishing wheel units.

Fig. 5 is a detailtop plan view of the mounting of one of the polishing units, the platform being shown broken away.

Fig. 6 is a side elevation, on an enlarged scale, of one of the polishing wheel units.

Fig. 7 is a transverse section. on an enlarged scale, on the line 'l-'l of Fig. 1.

Fig. 8 is a fragmentary iront elevation, on an enlarged scale, of the endless conveyor and Sup- 'porting track therefor,

Fig. 9 is a vertical section on the line 9-9 of Fig. 8.

Fig. 10 is a front elevation of a portion of one of the hanger plates and an article supporting hook thereon.

Fig. 11 is a side elevation, on an enlarged scale, with part shown in section of one of the polishing wheels.

Fig. 12 is a front end elevation of one of the polishing wheels.

Fig. 13 is a transverse section on the line I3-I3 of Fig. 11.

Fig. 14 is a top plan view, on an enlarged scale, of a section of the endless conveyor and supporting track therefor.

Fig. 15 is a detail vertical section on the line II5 of Fig. 2.

Fig. 16 is a detail vertical section on the line IB--I6 of Fig. 2.

Fig. 17 is a side elevation of a modified form of article supporting means on the endless conveyor.

Fig. 18 is a top plan view of the cam bar and article supporting means shown in Fig. 17, the parts being illustrated before the rotatable hanger members are engaged by the cam bar.

Fig. 19 is a view similar to Fig. 18 but showing one of the hanger members in engagement with the cam bar.

Fig. 20 is a detail view of the mounting of the cam bar on the track frame.

Fig. 21 is a diagrammatic view of the electric circuit connections from the power line to sockets cooperating with plug connectors on conductors leading from the `motors of the bufiing Wheel `tions may be made in the particular constructions shown, and the invention may be embodied in .other forms as will appeal to those skilled in the art and falling within the scope of the appended claims, without departing from thespirit of the invention.

Referring to a detailed description of 4the particular embodiment of the invention ,illustrated in Figs. 1 to 16, and 21 of the drawings, the construction shown includes a frame `A having ends lB, each composed of a basemember I, a standard 2 extending upwardly therefrom centrally of the ends thereof, and supports generally designated 3, secured to the upper ends of the standards 2. The base members I and the standards 2 Vare preferably, as shown, constructed vof metal I beams. Each of the supports 3 consists of alpair of spaced channel members 4 and 5 connected at either side centrally of their ends by gusset plates 6 and l. The upper supports 3 are secured to the standards 2 by bolts 8 or similar fastening members passing through the plates 8 secured to the standards 2 and through the inner gusset plates 1. The ends B of the frame are connected by a longitudinal beam l0, said beam fitting upon and being suitably secured to the upper channels 5 of the supports 3. The upper supports 3 are'also connected with each other at their ends by L-shaped bars II and I2, each of these bars being disposed as shown with flanges I3 and I4 thereof extending outwardly horizontally. Similar L-shaped bars I5 and I6 are secured to and extend transversely along the outer sides vof the supports 3, andL-shaped supports I5 and I6 each having one of their flanges YI1 and I8 respectively extending outwardly horizontally in the .same horizontal plane with the flanges I3 and I4 of the L-shaped members I I and I2, the adjacent ends of the said flanges being connected by curved plates I9 forming continuations thereof and providing therewith a substantially rectangular shaped frame for supporting an endless conveyor C.

Referring now particularly to Figs. 2, 3, '7, and 8 of the drawings, the endless conveyor C includes a sprocket chain 20 engaging sprocket wheels 2 I, 22, 23, and 24 rotatably mounted on vertical shafts 25 secured at their upper and lower ends by nuts 26 to the supports 3 at the corner portions of the frame. U-shaped channel members 21 are secured to each of the horizontal flanges of the L-shaped bars II and I2, said channel members being disposed with their side flanges 28 extending horizontally and having suitably secured thereon upper and lower rails 29 providing tracks for trolleys 30 to which the sprocket chain 20 is connected. Each trolley 30 has a side plate 3I which is provided with a downwardly extending portion 32 intermediate its ends. The sprocket chain 20, at intervals along the same, is attached to the trolleys 30 by angular clip members 33, said clip members being secured as shown by bolts 34 to the depending portions 32 of the side plates 3| of the trolleys, and being riveted or otherwise suitably secured to the sprocket chain 20. Detachably secured to the depending portions 32 of the side plates 3I of the trolleys 30 are hanger plates 35 for the articles or parts to be polished. In the particular exempliiication of the invention shown in which the hanger plates 3,5 are adapted for supporting spinners 36 vfor fishing tackle, each hanger plate 35 is provided at its lower end with hooks 3l adapted to beengaged by the eye portions 38 of the spinners 36. The hooks 3l, which are conveniently constructed of wire, each have a shank portion 39 which has at its upper end a laterally extending portion 40, and the hooks are each secured to the `hanger plates 35 by passing the laterally extending portions 40 of the same through an aperture in the hanger plate and then bending the outer end of the laterally extending portion back against the face of the hanger plate. The shank portions 39 of the hooks below the upper ends thereof are secured to the hanger plates by staples 4I.

Mounted on the longitudinal beam I0 is an electric motor 42 for operating the conveyorC. On the motor shaft 43 is a step-pulley 44 connected by a belt 45 with a step-pulley 46 on a shaft 4'I of a reduction gear 48 mounted on the longitudinal beam I0. On the take-olf shaft 48 of the reduction gear 48 is a sprocket chain 5I with a sprocket wheel 52 xed on one of the shafts 25, the sprocketl chain 28 of the endless conveyor being driven through the sprocket wheel 2I on said shaft 25, this arrangement providing for driving the conveyor so that it travels at relatively low speeds, approximately seven and onehalf, ten and three-quarters, and fifteen feet per minute. On each of the base members I of the frame A at opposite ends of said members, are jack screws 53 providing for vertical adjustment of the frame A.

Below the conveyor supporting frame A and extending forwardly thereof is a table-like frame D having legs 54 and a rectangular shaped top 55 lsaid frame being arranged so that the vertical plane of the path of travel of spinners 36 or articles or parts carried on the forward straight stretch of the endless conveyor C (indicated by the dotted line in Fig. l) is substantially rriidwasr the sides of the top 55 of the frame D.

I attacca 'on' the frame n is a pair or pairs of polishing wheels E arranged side by side close together with the axes' of the same lying in planes parallel to and at either side of the path of travel of article hanger plates 35 carried on the forward straight stretch of the conveyor, said polishing wheels eng-aging each other` with a slight pressure and being disposed at a forward and upward inclination in a vertical plane parallel to the p ath of travel of article hanger plates 35 on said straight stretch of the conveyor so that the articles or parts are drawn by the conveyor C between and past the polishing wheels.l

As many pairs of polishing wheels as desired may be employed, depending upon the type of work to performed, two pairs being shown in the present instance and provision being made for using bothpairs of buing wheels in the polishing operation or the use of either pair separately, it being advantageous in different classes of work to use bufling wheels 'of different size and density. For example, in operating onv nickel plate which is usually very thin and soft, it is desirable to use buliingr wheels of smaller siZe and less density than when operating on articles of brass. Then again, it is desirable vto use polshing wheels of different size and density when operating on spinners or other articles of sirnple contour than when polishing articles having more difficult and opposing contours. As will be appreciated, two pairs of polishing wheels facilitates change over from one kind of work to another and one pair can be used while the bumng discs of the other' pair of wheels are being removed and others substituted. A single bufiing wheel F is shown located in advance of the two pairs of buning wheels E to operate upon the articles or parts to be polished separately from the pairs of bufnng wheels, this being` desirable in polishing certain ln'nds 'of articles or parts. y

lThe buiiing wheels may be of any of the well known standard y constructions. Each of the bun-lng wheels is shown as composed of centrally apertured discs 'of cotton securely clamped together at their central portions on a shaft 58 between a collar l' on the shaft 'and a clamp nut 53 eungaging athreaded portion 5e on the outer end of the shaft. In making up the buin'ng wheels, a number of the cotton discs to are sewed together near their central portions, about twenty of such discs for a quarter inch section. These quarter inch sections are threaded on the shaft 5E one by one with one or more small separator discs ci of Bakelite being interposed between the cotton disc sections 6i) dependingl Aupon the degree of flexibility desired. The threaded portion 59 of the 'shaft 56 is extended toabout one-half the distance between the forward end of the shaft and the collar' 51 to facilitate assembly of the cotton discs on the shaft.

A separate mounting is provided for each of the polishing wheels E and F that provides for supporting the same with its aiis of rotation extending at a forward and upward inclination in a plane parallel to the path of travel of the hangers 35 on the forward straight stretch of the conveyor C at one side thereof, said mounting providing for angular adjustment of the 'polishing wheels in a vertical plane to different forward and upward inclinations in a plane 'parallel te the path of travel of hangers at on the forward straight stretch of the conveyor, and also for angular adjustment about an axis' parallel `to the path of travel and bodily adjustment r'ectilinearly toward and from the path of travel of articles or parts on the conveyor, said mounting being in the form of a compact unit and including a support for a motor for operating the polishing wheel, and attaching means being provided for detachably securing the buii'ing wheel units at different points along' either side of the top 55 of the frame D.

As will be appreciated, the several adjustments of the buing Wheels providedv for by the mounting for the same, together with the vertical adjustmentuof the conveyor supporting lframe A through the jack screws are of importance in providing for the positioning of the bumng wheels for efficient operation on articles or parts of different contours and sizes, and the machine is thus made practical Lfor efficiently performing many intricate types of work. Also it willVv be noted that the simple compact'form of bufling wheel unit adapted to be readily attached at different points along either side of the top of the frame D and used interchangeably with other similar units is of material advantage in adapting the machine for different classes of work.

Each of the bumng wheel units includes a base plate 52, a pedestal E3 on the base, a rectangular shaped frame |64 supported on the upper end of the pedestal, said frame at one side thereof having a roclable joint connection with the pedestal which preferably as shown comprises pivots 55 and -56 disposed at right angles to each other and providing for tilting the frame 54 about an axis perpendicular to the path of travel of articles or parts on the forward straight stretch of the conveyor C, and also for tilting the same about an axis parallel to the path of travel of the articles and toward and from the path of travel of articles or parts on the conveyor. For effecting angular adjustments of the frame 613 and to maintain the same in different positions of adjustment, an adjustable pivotal link connection B'i is provided between the frame 64 and the base 62 to one side of the pivot 65, the same including a turnbuckle B8 in threaded engagement with a threaded rod portion 69. A similar adjustable link connection 'Iii is provided between an extension of pivot 65 and the base 52 forwardly of the pivot e6 as seen in Fig. 6.

Slidably mounted on the frame M for adjustment longitudinally thereof is a platform 'H upon which is rotatably mounted at one end thereof the shaft 56 of the buiing wheel, said shaft being disposed transversely of the platform. The electrio motor 'i2 for operating the bufhng wheel is mounted on the platform 'H at the other end thereof, the motor shaft 'F3 having pulleys 14 thereon connected by belts 'le with pulleys it on the inner end of the bufing wheel shaft 56. Adjustment of the platform il is effected through a rod 17 rotatably mounted at one end at 'IB-on the frame ed and having a threaded portion "I9 engaging a threaded bore in a boss di) projecting downwardly from the platform ii, the rod 11 having at its forward end a hand wheel 8l for turning the same. A clamp 82 is provided for each of the bufng wheel mountings to detach- `ably secure the same to the top 55 of the frame D, the clamps being applied as shown with one 'arm thereof engaging over the base 62 of the mounting, and with its adjustable member 83 tightened up in engagement with the under side of the top 55 of the frame.

Referring now to Fig. 21 of the drawings, on the frame D, at intervals along opposite sides thereof, are providedv electrcs'ocket connectors is a controlling switch s. Ihe socket connectors c, d, e, and f (indicated diagrammatically in Fig. 2l) -to cooperate with the lplug connectors of the motors operating the two pairs of bufing wheels E are 4appropriately connected to the power supply lines k, m, and n so that the buffmg wheels of each pair are driven in opposite directions as indicated by the arrows in Fig. 3 of the drawings. The socket connector b for the plug connector of the motor that operates the single buing wheel F is connected in the circuit as shownrso that this buing Wheel will be driven clockwise. Two .additional socket connectors g and h are provided so that the plug connector of the motor of any of the bufling wheels may be changed to one of the extra socket connectors g or h to reverse the direction of operation of the bufnng wheel to facilitate placing the discs of cotton or .the like on the shaft 56 of the wheels and removing the same therefrom. The threaded portion 59 of Vthe shaft56 of one of the Wheels of each pair of bufiing wheels E is a right-hand -thread and the threaded portion of the shaft of the other wheel is a left-hand thread. Thus the Wheels and nuts 58 have a tendency to tighten rather than loosen when the wheel is in active ,engagement with the Work. In placing the buffing discson the wheel shaft, the motor is started and with the shaft revolving in the proper direction with reference to the direction of the threads on the shaft, as the bufling discs and spacers are put on the end of the shaft, the threads draw them up to the smooth portion of the shaft and as more and more buffs are added they in turn force the first buffs on to the smooth part of the shaft. A slight pressure applied to the buffs will have a tendency to tighten the Wheels. In removing the buffs from the shaft, the motor is operated to revolve the shaft in the reverse direction. Then With slight pressure applied to the buffs which are on the threaded portion of the shaft, they will roll right off.

l The top 55 of the frame D has an opening 84 therein extending longitudinally intermediate the sides thereof. At the under side of the top of `the frame andextending beneath the opening 84 is a bunker 85 to ycatch the b uing dust, said Vbunker having discharge pipes 88 extending from the bottom thereof and to which are connected conduits (not shown) having an exhaust fan associated therewith for carrying 01T the buffing dust to asuitable place of discharge.

As will beA understood in the operation of the machine, spinners 36 or other articles or parts to be polished are .placed on the hooks 31 of the hanger plates 35 of the conveyor `C at that end of the machine shown at the right hand side of Fig. 1 of the drawings, the spinners being carried from the loading section of the conveyor forwardly and over the frame D and drawn between and past the pair or pairs of polishing wheels E, the spinners after being subjected to the polishing action of the wheels being carried forwardly therefrom to the other end of the machine where they are removed. The polishing of the spinners is expeditiously and efficiently performed by the machine. Provision is made for adjusting the polishing wheels to different forward and upward inclinations in a vertical plane longitudinally of and parallel to the path of travel of articles or' parts on the conveyor and for angular adjustment about an axis parallel to the path of travel and bodily adjustment rectilinearly toward and from the path of travel of articles on the conveyor. These adjustments in conjunction with the vertical adjustment of the conveyor frame provide for the positioning of the bufiing wheels for eiiicient operation on articles or parts of different contours and sizes, so that the machine is capable of efficiently performing on many intricate types of work. The various adjustments referred to can be easily effected. The machine can be speedily set for different classes of work. the simple, compact bufiing wheel units being interchangeable one with another and readily attached to the frame D at different points along the same providing for varying the number of bufling Wheels as desired to meet different conditions and being of material advantage in adapting the machine to different classes of work.

A machine constructed in accordance with the present invention has proven highly satisfactory in use. The polishing of spinners is rapidly and efficiently performed by the machine. An even scratch-free finish is obtained free from excess bufling compound. The finish obtained is comparable to the best finish obtainable by hand work. the work being accomplished in considerably less time and less cost over hand bufiing and with a large saving in buffs and bufimg compound.

In Figs. 17 and 20 of the drawings is illustrated a modified construction of hanger for suspending automobile door handles from the conveyor C. In this modified construction the hanger plates instead of having hooks fixedly secured thereto are provided with hooks that have their shank portions mounted on the hanger plates for partial rotation, and means being provided for automatically turning the hooks during travel of the conveyor to present different positions of the automobile door handles to the polishing wheels. In these views 81 designates the U-shaped channels on which are mounted the track members 88 for the trolleys 89, each having a side plate 90 provided with a depending portion 9| to which the hanger plates 92 are attached by bolts 93. In this modified construction, the article suspending hooks 94 have lower laterally extending end portions 95 adapted to have the socket portion 96 of an automobile door handle 91 fit thereon. The shank 98 of the hook is rotatably mounted in bearings 99 on the hanger plate 92. On the shank 98 of the hook is a coiled spring |00l one end |0| of which engages an aperture |02 in the hook shank, the other end |03 of said spring bearing against the face of the hanger plate. The spring |00 acts to yieldingly maintain the hook in the position shown in Fig. 17 of the drawings with the stop pin |04 on the shank 98 on the hook in engagement with the stop pin |05 of the bearing 99 of the hanger plate 92. The shank 98 of each of the article supporting hooks is provided at its upper end with a laterally extending arm |05 to cooperate with a longitudinally extending cam bar |06 on the track 81 to turn the hook through a quarter of a revolution when the arms |05 on the Shanks of the hooks engage the cam bar during travel of the conveyor C. The cam bar |08 is suitably secured as by welding to the lower end of a hanger |01 which is detachably secured by bolts |08 to track 81, said cam bar lbeing positioned with its forward end slightly in advance 01 the first pair 0fl polishing Wheels E- As the articles or hangers are carried along from the loading end f the machine t0 the forward straight stretch of the conveyor, the hooks gli are maintained by the Spring |80 in the Position shown in Fie, ,17 t0 contact with the .Single p01- ishing wheel F, this polishing wheel F being tilted inwardly toward the path of travel of the automobile door handles so that it will contact with and polish the end portion of the top and front face of the same. As the door handles pass the polishing wheel F and before they reach the first pair of polishing wheels E, the arms m5 on the shanks of the hooks engage the forward inclined end of the cam bar H06 and are turned thereby through a quarter revolution so that the sides of the door handles are presented to and are acted on by the pairs of polishing wheels E, the door handles being held in this position by the cam bar until the same pass both pairs of the polishing wheels, the springs me returning the hooks and door handles to the position shown in Fig. 17 when the arms H35 on the Shanks of the hooks move out of engagement with the cai-n bar.

As will be understood, all that is necessary to change the machine for polishing automobile door handles instead of spinners or the like, is to remove the hanger plates that have the article supporting hooks xed thereon as hereinbefore described, and substitute therefor the hanger plates 92 having the hooks 94 that are mounted for partial rotation. It will also be understood that when polishing spinners, the single forward polishing wheel F will be adjusted outwardly so as not to engage the articles.

What I claim is:

1. In a polishing machine, the combination of an elevated horizontal endless conveyor having means thereon for suspending therefrom articles or parts to be polished, said conveyor having a stretch thereof extending in a straight path, a polishing wheel, and a mounting for said polishing wheel supporting the same with its axis lylng in a plane parallel to the path of travel of article suspending means on said straight stretch of the conveyor at one side thereof, said mounting including a base, a pedestal on the base, a frame on the upper end1 of the pedestal having a universal joint connection therewith providing for tilting'the same about an axis perpendicular to the path of travel of the article suspending means on the straight stretch of the conveyor, and also for tiiting the same about an axis parallel to the path of travel of said article suspending means and laterally toward and from the path of travel of said article suspending means on the conveyor, two screw threaded adjustable pivotal link connections between said frame and s aidbase for effecting angular adjustments of the frame and to maintain the saine in different positions of adjustment, and a platform on which the polishing wheel is mounted, slidahle on said frame toward and from the path of travel of said straight stretch of conveyor, and means for moving said platform to different positions along said frame and for maintaining the same in different positions of said last mentioned adjustment.

3, In a polishing machine, the combination of an elevated horizontal endless conveyor having means thereon for suspending therefrom articles o r parts to be polished, said'conveyor having a stretch thereof extending in a straight path, a polishing wheel, and a mounting for said polishing wheel supporting the same with its axis ly: ing in a plane parallel to the path of travel of the article suspending means on said straight stretch of the conveyor at one side thereof, said mounting including a base, a pedestal on the base, a frame on the upper end of the pedestal having a universal joint connection therewith providing for tilting the same about an axis per: pendicular to the path of travel of the article suspending means on the straight stretch of the conveyor, Yand also for tilting the same about an axis parallel to the path of travel of said article suspending means and laterally toward and from the path of travel of said article sus: pending means on the conveyor, two screw threaded adjustable pivotal link connections betWeiIl Saai@ frame @mi Sad has@ fol effecting an* gular adjustments of the frame and to maintain the same in diiferent positions of said angular adjustments, a platform on which the polishing wheel is mounted slidable on said frame toward and from the path of traveI of Said Straight stretch of conveyor, means for moving said plat: form to different positions along said frame and for maintaining the same in different positions of said last mentioned adjustment, a motor on said platform having a drive connection with the shaft of the polishing wheel. V V

3. In a polishing machine, a frame, an ele.- vated horizontally disposed endless conveyor having means thereon vfor suspending therefrom are ticles to be polished, said means including a sesA ries of plates, article hangers on each of Sai@ plates, each article hanger including a vertically extending rotatable shaft having a laterally proljecting arm on the upper part thereof, a spring cooperating with said shaft kto yieldably hold the same from rotation,V a plurality of polishing wheels supported at different points alongside the path of travel of the article hangers, and a horizontally extending cam bar on said frame arranged to be engaged by the laterally projecte ing arms of the shafts of the hangers during travel of the conveyor to partially rotate the hangers to present different portions of articles on the hangers to certain of the polishing wheels.

4. In a polishing machine, a frame, an ele-f. vated horizontally disposed endless conveyor sup.-.A

ported on the frame, article hangers on the con-z veyor each including a vertically extending rotatable shaft having a laterally projecting arm thereon, a spring cooperating with the shaft of each of the article hangers to yieldably hold the same from rotation, a plurality of polishing wheels supported at different points alongside the path of travel of the article hangers,l and means on said frame arranged to be engaged by the laterally projecting arms of the shafts of the article hangers during travel of the conveyor to partially rotate the same to present different portions of articles on the hangers to certain of the polishing wheels.

5. In a polishing machine, a frame, an ele.- vated horizontally disposed endless conveyor on the frame, said conveyor having means thereon for suspending articles to be polished, said means including a series of plates, an article hanger on each of said plates comprising a vertically extending rotatable shaft having a laterally pro,- jecting arm thereon, a coil spring on the shaft having one end fixedly secured to the shaft, and its other .end bearing against said plate, a stop on said plate, and a part Gil the shaft adapted to engage said stop, said spring acting to yield.- ably hold the shaft against rotation with said acecho@ part on the shaft inengagement with the stop on the plate, and means on the frame to'be engagedV by the laterally' projecting arms'on the shafts of the hangers' during travel of the con'- veyor to turn the same. y y

6. In ,a polishing machine, a frame, a4 horizontal endless conveyor on the upper partlofY the frame havingmeans onthe same for suspending therefrom articles or parts to be polished, jack screws on the lower part of said frame for raising and lowering the same, said conveyor having a stretch thereof vextending in a straight path, a polishing wheel, a mounting for the polishing wheel supporting the same Withits axis lying inV a plane parallel to'and at one side of the path of travel of the` article supporting means on said straight stretch of the conveyor, said mounting being tiltable about an axis perpendicular to the path of travel of said' articlev suspending means on the conveyor to adjust theV polishing Wheel to different forward upward inclinations relative to the path of travel of said article suspending means,v and means for maintaining said mounting in different positions of said tilting adjustment. n A

'7. In a polishing machine, the combination of an elevated horizontal endless `conveyor having` means thereon for suspending therefrom articles or partsto be polished, said conveyor having a stretch thereof 4 extending in a straightpath,l a polishing wheel, and a mounting forsaid polishing wheel supporting thejusame with its axis lying in Aa plane' parallel toA theirpaltlrf` travel f. article suspending meansor? .Sfildstraghi stretch of the conveyor at one side thereof, said mounting including a base', agpedestal on-thebase, a frame on the upper end of thepedestal having a universal joint connectionrtherewith providing for tilting the Vsame about an axisperpendicular to the path of travel of the article suspending means on the straight stretchcof the conveyor to adjust the polishing wheel to Adifferent' forward upward inclinationsrelative to' the' path of travel o f the article suspendingneans on said straightstretch of the' conveyor, and also for tilting the same about anv axis parallel to the path of travel of said article suspending means laterally toward and from the path of travel of said article suspendingmeans on the conveyor,

and two screw-threaded adjustable pivotal links" connecting said frame and said base for` effecting" said angular adjustments` of the* frame4 and to maintain the same in different'positio'ns' of each of said angular adjustments. W

8. In a polishing machine, a table-like frlne comprising supporting legs and a top of general rectangular form, a secondA frame including a pair of end standards extending above the top of the first mentioned f ar'ne ato'pposit endsthereof, a horizontal endless conveyor' supportedon' the upper part of the second frame arid'uh'avin'g means thereon for suspending therefrom articles or parts to be polished, said conveyor having' a stretch thereof extending' in a straight path longitudinally of and above the top of the table-'like' frame in a vertical plane intermediate the sides thereof, a polishing wheel and a mounting for' Said polishing wheel onthe' top of the table-'liker frame for supporting the polishing Wheel with its axis lying in a vertical plane parallel to the' path of travel of the article suspending means on said straightl stretch of the conveyor at one side' thereof. saidv mounting including a base, a pedestal on the base, a frame on theV upper end of theV pedestal having a universal joint connection therewith' providing' for uiting the same about anA axis perpendicular to the path of travel of ther about an axis parallel to the path of travel of said article suspending means'laterally toward and from the path of travel thereof, means for effecting said tilting adjustments of the frame andfor maintaining the same in different positions of adjustment, and mea-ns engaging the base of the mountingfor detachably securing the same on top of the table-like frame at one side thereof at different points along the same.

9'.Y In a polishing machine, a table-likel frame '.orr'ip'rising supporting' legs and a top of general rectiangular form; a second frameA including a pair of endI stf'indards extending above the top of theriirstA mentioned frame at opposite ends thereof, a horizontal endless conveyor supported on the upper part of the'second frame and' havingA means thereon for' suspending therefrom articles or parts` to be polished', said conveyor having a stretch thereof extending in a straight pathA longitudinally of and above the top of the tablelike frame in a vertical plane intermediate the` sides thereof, a polishing wheel and a mounting for said polishing wheel on the top of the table'- like frame for supporting the polishing wheel with its axis lying in a vertical plane parallel to the path of travel of the article suspending means on said straight stretch of theVY conveyor at one side thereof, said mounting including a base, av

tions of adjustment, and means engaging the base of the mounting for detachably securing the' same on top of the table-like frame at one side thereof at different points along the same, said last mentioned means comprising a U-shaped clamp member adapted to engage over the top of the base of the mounting, and a screw member on the' clamp adapted to engage the underside of the top of the table-like frame.

10. In a polishing machine, a table-like frame comprising supporting legs and a top of general rectangular form, said top having an opening therein extending longitudinally thereof substantially midway its side edges, a second frame including a pair of end standards extending above the top of said table-like frame at opposite ends thereof, a horizontal endless conveyor supported on the upper part of said second frame and having means thereon for suspending therefrom articles to be polished, said conveyor having a, stretch thereof extending in a straight path.

longitudinally of and above the opening in the top of the table-like frame, pairs of polishing wheels positioned at intervals along the tablelike frame, the polishing wheels of each pair being arranged side by side at opposite sides of the vertical plane of said straight stretch of the conveyor, and a mounting for each of said polishing..

wheels supporting the same with its axis disposed at a forward inclination in a vertical plane parallel to the path of travel of article supporting means on' the straight stretch of the conveyor,

13 the mountlngs for each pair of polishing wheels being disposed at opposite sides of the frame, and a. bunker at the underside of the top of the tablelike frame extending longitudinally beneath the Number Number Name Date Abramsen July 11, 1916 Brinkman Aug. 11, 1916 Lund Dec. 7, 1926 Draeger Oct. 8, 1929 Steiner Jan. 2, 1934 Best Mar. 13, 1934 Trudeau Jan. 3, 1939 Walper Nov. 21, 1939 Turnbull Mar. 14, 1944 Turnbull Mar. 14, 1944 Kleintop July 4, 1944 Belcourt Oct. 9, 1945 FOREIGN PATENTS Country Date Great Britain May 10, 1934 Great Britain Feb. 26, 1942 

